Dispenser for flowable substances

ABSTRACT

A viscous fluid dispenser using an expansible member or bladder wherein longitudinal and radial stress is imparted to the material making up the expansible member, and wherein the expansible member is extendible substantially the entire length of the interior cavity of the container whereby substantially complete dispensing of the fluid retained within the expansible member is obtained. A unique assemblage of valve components of low cost and relatively easy fabrication permits assembly of containers of the expansible bladder type in an efficacious manner thereby providing low cost containers.

United States Patent [1 1 Roper et a1.

[ DISPENSER FOR FLOWABLE SUBSTANCES [75] Inventors: William H. Roper, Los Angeles;

Robert N. Ross, Fountain Valley, both of Calif.

I73] Assignee: Plant Industries, lnc., Anaheim,

Calif.

22 Filed: Feb. 11, 1971 21 Appl. No.: 114,485

[52] U.S. Cl 222/183, 222/212, 222/3865 June 12, 1973 5/1967 Meshberg ZZZ/386.5

Primary ExaminerSamuel F. Coleman Assistant Examiner-Larry Martin AttorneyMahoney, Hornbaker & Schick [57] ABSTRACT A viscous fluid dispenser using an expansible member or bladder wherein longitudinal and radial stress is imparted to the material making up the expansible member, and wherein the expansible member is extendible substantially the entire length of the interior cavity of the container whereby substantially complete dispensing of the fluid retained within the expansible member is obtained. A unique assemblage of valve components of low cost and relatively easy fabrication permits assembly of containers of the expansible bladder type in an efficacious manner thereby providing low cost containers.

26 Claims, 8 Drawing Figures PAIENIEU JUN! 3 SIEET1N3 INVENTORS. WILLIAM H. ROPER,

ROBERT N. ROSS AND R WMKM N NC m wmm V CT H M 0 B N A MA Gm n PAIENIEU 3.738.538

FIG. 3. 3o 26 vs I )- loam uew 1/ INVENTORS. WILLIAM H. RoPER,

ROBERT N. Ross AND GABOR VISNOVITS MAHONEY, HORNBA KER AND SCHICK ATTORNEYS PAIENIED J n 1 2 W MH3W3 INVENTORS.

WILLIAM H. ROPER,

ROBERT N. ROSS AND GABOR VISNOVITS BYMAHONEY HORNBA KER AND SCH/CK ATTORNEYS DISPENSER FOR FLOWABLE SUBSTANCES BACKGROUND OF THE INVENTION Recently there have been medical findings that tend to indicate that materials which are dispensed with gases or fluids of the aerosol type may be detrimental from a health standpoint. Additionally, the uses of aerosols as propellants for dispensing flowable substances as for example viscous fluids as lotions, hand creams andthe like introduce unique and highly technical filling operations and special container fabrication because of the usually high pressures involved.

turning to its original physicalstate. Dispensers of this general type are generally disclosed in US. patents to Lari 2,816,690, Geisler 2,966,282, and Jacuzzi 3,361,303. However, these prior art dispensers have suffered from certain shortcomings and particularly with respect to the pretensioning of the expansible members and the manner of retaining the expansible members within the assemblage. The need for low cost containers which may be easily fabricated, has not been fulfilled by containers of the prior art type for one reason or another.

With the hereindisclosed invention, a dispenser of the expansible member type, wherein the fluid to be stored is easily introduced into. the storage member without attendant blocking or disposition of the expansible member, which would make additional filling difficult if not impossible, is provided. Additionally, a container which is easily assembled and is competitive from an economic standpoint is'provided, which has the ability to dispense substantially all. of the flowable "fluid contained within the expansible member because i of the longitudinal and radial prestressing which is imparted to theexpansible member prior to its being filled with the flowable substance. One means of obtaining this effect'is by having the inside diameterof the expansible member larger than the mandrels or equivalent members diameter used in the assemblage.

OBJECTS AND SUMMARY OF THE INVENTION It is an object of this invention to provide afluid dispenser of the expansible member type. i

It is another object of this invention to provide a fluid dispenser of the expansible member type wherein radial and longitudinal prestress is imparted to the expansible member in a particular manner.

It is still another object of the invention to provide a fluid dispenser of the expansible member type utilizing a unique assemblage of valve components.

It is still a further, more specific object of theinvention to provide a fluid dispenser of the expansible member type wherein the expansible memberis retained in extended relationship within the interior of the dispenser.

It is still another and further specific object of the invention to provide a fluid dispenser of the expansible member type wherein a specifically configured retaining means is utilized to maintainthe expansible member in the extended position within the interior of the container.

It is still another another and further more specific object of the invention to provide a fluid dispenser of the expansible member type wherein the expansible member is prestressed in a longitudinal and radial manner utilizing a valve closure structure of unique design configuration.

It is an even more and further specific object of the invention to provide a dispenser of the expansible member type wherein the expansible member is of a certain configuration and is held in. the assembled form within a valve component which is easily fabricated and essentially trouble-free in operation.

These and further objects of the invention will become apparent from the disclosure and the drawings contained herein.

Generally, in an exemplary embodiment, the invention pertains to a fluid dispenser comprising the combination of a container body and cover therefor, including a fluid passageway communicating the exterior thereof to a valve member supported within said container body. A valve member and an expansible member are provided wherein the expansible member has an open end and a closed end, the diameter proximate the open end is larger than the diameter of the closed end, and the expansible member is adapted to be retained within the container body and store fluid therein. A valve seating member is disposedin axially shiftable relationship within the valve member and is adapted to open and close'the communication between the fluid passageway and the interior of the expansible member. Means to impart radial and longitudinal stress to the walls of the expansible member prior to storing fluid therein completes the essential components of the fluid dispenser.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of one embodiment of the fluid dispensers of this invention, partially in cross section;

FIG. IA is a fragmentary view taken along the line lA--1A of FIG. 1;

FIG. 2 is an exploded view of the essential components of the fluid dispenser shown in FIG. 1 illustrating their order of assembly;

FIG. 3 is a side elevational view partially in cross section of another embodiment of the invention;

FIG. 4 is an exploded view of the essential components of the dispenser illustrated in FIG. 3 shown in their order of assembly;

FIG. 5 is a side elevational view partially in cross section of still another embodiment of the fluid dispensers of this invention with the cover being shown in the exploded position for purposes of clarity;

FIG. 5A is a fragmentary view taken along the line 5A5A of FIG. 5; and i FIG. 6 is an exploded view of the essential components of the dispenser illustrated in FIG. 5 shown in their order of assembly.

DESCRIPTION OF THE BEST EMBODIMENTS CONTEMPLATED thereof form a neck portion 6 and. an interior cavity or chamber 8 with the bottom interior wall being configured to form a collet'l0 of slotted and deformable character thereby forming receptacle 12 for purposes which will become apparent as the description proceeds herein.

Supported on neck 6 is collar member 14 being engaged in friction fit manner by the cooperation of bevelled wall 16 of neck 6 and the depending engaging wall portion 18 of collar 14. Thus, in the preferred form, the collar 14 is also made of molded plastic and is of a configuration and of functional character as is commonly found in the container art.

The collar 14 is provided with a configuration to thereby form two step surfaces 20 and 22 in one side wall-thereof, as shown in FIG. 1A for reasons which will now be described. The collar 14 is provided with an annular opening 24 to receive a cover member 26 of the usual type having a fluid passageway 28 formed by the walls 30 thereof communicating the exterior 32 to the inlet 34 which is in communication with a valve member component generally designated 36. The cover 26, also preferably of molded plastic, is depressible in the conventional manner to the extent of the radial movement permitted by interior shoulder 38 of collar 14 in the nondispensing position, and is depressible in the opposite direction into the dispensing position to put'the fluid passageway 28 into fluid dispensing communication with valve member 36. However, before cover 26 may be depressed into the dispensing position, the dispensing nozzle 40 thereof must be aligned within the step 20 of collar 14. To prevent discharge or dispensing of the flowable material, the cover 26 is merely rotated so that the undersurface of nozzle 40 will rest onthe surface or step 22 of collar 14 thereby effectively preventing cover 26 from being depressed into the fluid flow position.

Valve member component 36 comprises (in the order of assembly shown in FIG. 2) ferrule member 42 of thin wall deformable aluminum, for example, of generally cylindrical design having an orifice portion 44 communicating to the inlet 34 of passageway 28 of cover member 26. Ferrule 42 may be within the thickness of about 0.020 of an inch so that the lower portion may be crimped or bent as shown at 46 of FIG. 1. A larger cylindrical portion 48 provides an interior recess to receive the valve seat 50 in this instance an annular disc of conformable rubber having a central aperture 52 to accommodate the inlet 34 of passageway 28. Ferrule 42 has depending exterior wall 53 which, as indi cated earlier, becomes crimped in later assembly as will become apparent. The interior configuration of ferrule 42 is adapted to receive in nestled, substantially tight relationship, the remaining members of the assemblage as can be seen in FIG. 1, and as will be described.

A valve seating member 54 having an annular portion 56 with spaced protuberances 58 and depending portion 60 provides the manipulatable component of the assemblage to allow dispensing of the fluid contained within the expansible member. The upper surface 62 of member 54 which is axially shiftable, as will become apparent, into and out of fluid-tight relationship with the under surface 64 of valve seat 50 permits fluid to flow between the spaced projections or protuberances 58 peripherally spaced on the side surface of annular portion 56. The under surface of annular portion 56 and depending portion 60 are adapted to receive the coil spring 66, which coil spring acting against reaction member 68, normally positions and biases seating member 54 into the seated or closed position thereby effectively blocking fluid flow to passageway 28.

A reaction member 68, disc-like in shape, having a short, centering button, such as 70, is provided for coil spring 66, and has a plurality of spaced apertures 72 to allow fluid to flow therethrough from the confines of the expansible member, as will become apparent. The manner in which member 68 is supported within the valve component 36 will be described hereinafter.

A stress inducing member 76 in this instance spherically shaped, is adapted to be received in snap fitting, frictional engagement with retaining receptacle 12 of collet 10 as will be described.

The next component, valve bodymember 78 is of general cylindrical configuration having a first annular portion 80 of a size and shape to be accommodated within the interior of ferrule member 42, such that .the valve seat 50 is securely positioned therebetween. A depending collar-like portion 82 is of appropriate size and configuration to be received within cylindrical portion 53 of ferrule member 42, and is provided with an interior shape substantially as seen in FIG. 1 to perform a gripping'or holding function for the expansible member as will be described. A lower, depending portion 84 of tapered design, such as at 86, is provided with an interior shoulder 88 sufficient in size to support reaction member 68 in retained relationship, as seen in FIG. 1, so that axially movable seating member 54 is retained within the assemblage and biased into the closed position in conjunction with seat 50 by means of coil spring 66. Thus, the interior of valve body 78 is appropriately fashioned and of a size sufficient to accommodate these components.

The final member in the assemblage is expansible member 90, shown in phantom line prior to its proper positioning within the container chamber 8, provided with an upper flanged portion 92 to receive the tapered end 86 of valve body member 78. This also provides a means whereby the expansible member 90 is contained within the assemblage-The flange portion 92 forms a,

mouth 94 opening into the interior of expansible member 90, which in the unassembled and unstressed condition may be approximately from about one-third to one-half the length of the interior cavity 8 and is pro-,

vided with an upper enlarged portion 96 and a lower elongate, closed portion 98 to provide a fluid storage chamber within the interior thereof.

Expansible member 90 is preferably made of an elastomeric material such as, for example, a natural latex or silicone rubber of suitable thickness, and which has exceeding high memory or resilience capabilities to permit the membrane or bladder from which it is made, after distortion as by means of fluid introduction, to exert substantially high forces upon the fluid contained therein to expel same therefrom. The interior diameter of extended portion 98 is slightly smaller than the upper portion 96, but is slightly larger than the diameter of the spherical member 76.

The manner of assembling of the dispenser 2 and the filling thereof with a flowable fluid or substance, will now be discussed. The expansible member 90 is fitted over the depending end portion 84 of valve body mem-- ber 78, and the ball 76 dropped into the interior of expansible member 90. The valve body member 78 with the loosely retained expansible member 90 is then posi tioned within the neck 6 of container 4 with the elongate portion 98 extending into the chamber 8 as shown in phantom line of FIG. 1. A stick or rod, not shown,

cavity 102. Thereafter, the other elements of the assemblage, as depicted in FIG. 2, are assembled in the manner shown and described, and the ferrule member 42 crimped or clamped into position to thereby perform rigid fluid-tight securement of the assemblage within the neck 6 of container 4.

Prior to the positioning of collar 14 and cover 26, a filling tool, not shown, is inserted into the valve member 36 to therebyaxially move valve seating member 54 out of engagement with the lower surface 64 of valve seat 50 to put the interior cavity 102 of flexible member 90 into communication with a flowable fluid or substance supply. The flowable substance usually a viscous one, such as hand cream, lotion and the like, is introduced in metered amount into the cavity 102 and because of the enlarged portion 96, the walls of flexible member 90 begin to billow out and expand and eventually the interior chamber 8 is completely filled with the 1 material to be stored. Obviously, air escape ports may be provided where necessary in a manner well-known in the art, and which are not shown herein.

After the metered amount of flowable substance has been introduced into the flexible member 90, the removal of the filling tool permits the seating member 54 ter, the collar 14 and cover 26 may be positioned on the neck of the container 6 to thereby form a flowable fluid dispenser 2 of unique design.

To obtain dispensing of the fluid contained within the expansible member, one merely positions the nozzle 40 within the cut-out slot formed by step of collar 14 and presses downwardly to axially shift seating member 54 into the unblocked position, thereby allowing substance contained within flexible member 90 to flow through apertures 72 of member 68 around the coil spring 66, and through the pathways formed between the projections 58 on seating member 54 and then through the central aperture 52 of seat 50, and finally through the orifice 44 of ferrule member 42 and to the inlet 34 of passage 28 and thence to the exterior of outlet 32 formed by nozzle 40.

It will be noted that the extent of axial movement of valve seating member 54 is determined by under surface 64 of seat 50 and the upper surface of button 70 of reaction member 68. Thus, the upperextreme is the full closed position and the lower extreme is the full open position.

Because ofthe manner of imparting both longitudinal and radial stress to flexible membrane 90, and the general configuration of same, difficulties in filling the fluid dispenser are relatively absent .and substantially all of the flowable substance contained within the dispenser 2 may be dispensed.

Referring now to the remaining embodiments of the invention, the basic difference between these and that heretofore described is basically in the means of imparting longitudinal and radial stress to the flexible membrane 90. In the description of the remaining embodiments; the like elements used therein will bear the same numerals as earlier given the same elements and variations in the overall dispenser will be pointed out, but it should be remembered that basically the operation and end result are essentially the same as heretofore described.

Referring now to FIGS. 3 and 4, a dispenser 104 is shown and all of the exterior components thereof, as well as most of the interior components, are the same except as will be noted. In this particular instance instead of having a retaining member or spherical ball such as 76 to impart the longitudinal and radial prestressing to the flexible member 90, a mandrel or stem 106 is used in the assemblage. Herein, the mandrel member 106 has an upper portion 107 having pared or flattened surfaces 108 to form in conjunction with the interior of valve body 78, fluid passageways for passage of the stored flowable substance from the confines of expansible member 90.

The upper surface 110 is provided with a spring centering button 112 to properly position the spring 66 and to retain it within the assemblage. The button 112 protion 114 is less than the inside diameter of flexible member especially the elongate portion 98 thereof.

The terminus 116 of mandrel 106 is somewhat bulbous in configuration and is adapted to be received within the receptacle 12 of collet 10 formed on the in terior bottom wall of dispenser 104 which is essentially the same as that heretofore described for dispenser 2. It will be noted in this case that no twist has been imparted to the lower end of flexibleand expansible member 90, although if desired, before the valve component assemblage is made permanent, the assemblage may be rotated to obtain a similar twist in the membrane to obtain slightly more dispensing capability than if the flexible member were not so twisted.

The mandrel 106 is preferably of molded plastic material and simplifies assembly of dispenser 104 in the sense that all of the components shown in FIG. 4 may be pre'assembled as a unit, with the exception of ferrule member 42, inserted in place and thereafter the ferrule 42 crimped into position to thereby securely retain the valve component and. flexible membrane within the interior of dispenser 104. The filling and dis- Referring now to FIGS. -6, a slightly different manifestation of-the invention is shown. Herein, dispenser 118 is shown as having an upper container body 120 with bottom portion 122 being formed to provide a single concave configuration as shown. Bottom portion 122 is provided with air vents such as 124 which are commonplace in this art to allow for air escape during filling operations.

Because some of the flowable substances may tend to migrate or permeate through the elastomeric material, an inner liner 125, of polypropylene, for example, may be provided. Liner 125 may be self-supporting as shown or maybe secured within the assemblage and be comformable as those in the art will recognize. Liner 125 may be inserted into the body 120 before bottom portion 122 is secured into place.

The upper portion 126 of body 120 has inset collar portion 128 provided with the interior configuration shown, spaced from the remainder of the container and having integral connecting webs 130 to thereby form discontinuous slots 132 to receive cover member 134 in close fit arrangement.

Cover member 134 in this instance differs from that earlier described in the respect that it is formed with inset rim 136 having three equally spaced depending legs 138 (only two being shown) of incline plane and notch configuration as shown. The outside wall of cover 134 and exterior wall of rim 126 form circumfer ential groove 140 therebetween. The cover 134 is preferably of molded plastic and is depressible in conventional manner to the extent of axial movement permitted by the shoulder 142 of container body 120. The legs 138 and the specific configuration thereof coact with the webs 130 so that upon rotation of cover 134, it is positioned so that it may not be depressed and thus is'in the locked, nondispensing position. Rotation out of this position permits depression of cover 134 and obviously dispensing of the flowable substance contained within flexible member 90 as previously described.

The FIG. 5 embodiment differs from the FIG. 3 embodirnent, not only with respect to the container and the cover 134, but also in the means of imparting pretensioning to the expansible member 90 and the means of securing the assemblage within the cavity defined by the body 120 of dispenser 118.

I contained within the expansible member 90, has an upper end 148 with two upright spring retaining posts 150 forming therebetween an area to receive coil spring 66, the spring being centered by means of button 152. The terminus 154 in this instance, is of rounded configuration and merely extends to the bottom, interior wall of bottom portion 122 and is not frictionally retained therein as in the earlier described embodiment. Again, thelength of mandrel 144 and its outside diameter fulfills and meets the same criteria as set forth for the mandrel 106 of the FIG. 3 embodiment. Herein, flexible member 90 is shown about one-third the length of mandrel 144 and the elongate portion thereof is larger in diameter than the diameter of mandrel 144. Shorter bladder lengths may be useful.

Another difference from the FIG. 3 embodiment is the manner and mode of retaining the assemblage of valve components and flexible and expansible member 90 within the container. In this instance, the neck 156 of container body 120 is interiorly configured to receive in friction fit engagement, a snap ring member 158 generally of ring or collar-like configuration and having collar portion 160 and depending locking legs 162 provided with locking lip surfaces 164 for engagement with the interior shoulder of neck 156 as at 166 as illustrated. It should be noted that snap ring 158 is provided with a locking groove 168 and its general exterior configuration is adapted to bereceived within the interior of valve body portion 82 with the flanged portion 92 of expansible member held rigidly and securely therebetween. The lower depending wall 53 of ferrule 42 may be crimped at spaced points or about the entire lower periphery to insure fluid-tight, rigid securement. When locked in the position shown, the flanged portion 92 of expansible member 90 is securely retained in substantially fluid-tight relationship within the assemblage. 7

As in the embodiments before, the filling and dispensing operations are essentially the same. That is before the cover 134 is placed in position, a filling tool is inserted into the orifice of ferrule 42 to displace the valve seating member 54 from sealing engagement with valve seat 50 to thereby allow the flowable substance to be introduced through the fluid pathways formed by the spaced projections 58, through and around the coil spring 66 and by means of the grooves 154 in mandrel 144 into the interior of expansible member 90. Withdrawal of the filling tool automatically closes off the fluid passageway. The dispensing operation is the same as earlier explained with minor differences that are obvious. 3

Thus, there has been disclosed a dispenser for storing and dispensing flowable substances especially those of high viscosity in the area of about 1,000 200,000 centipoises, wherein'the expansible member is of a particular and specific relationship with respect to the other components of the assembly so that it is pretensioned, both longitudinally and radially prior to filing with the flowable substance. The particular configuration of the expansible member allows for ease of filling with the material to be stored in a controlled manner. Likewise, the various components making up the valve structure assembly are easily fashioned and assembled to provide dispensers which meet a variety of needs and which are essentially trouble-free in use.

There are many variations and modifications that will make themselves apparent to those of ordinary skill in the container art. For example, in some instances, it may be found desirable to make the valve assembly component of the dispenser rotatable with respect to the bottom thereof especially in those instances where the membrane or expansible member is rigidly secured to the interior bottom of the dispenser. This allows for substantially full expulsion of even the minutest amount of flowable substance remaining within the expansible member simply by rotating the top or bottom with respect to the opposite end. Likewise, the specific shape and configuration of the components making up the dispensers disclosed herein are not particularly important except as previously noted. Thus, a myriad of alternatives will be suggested, all of which are intended to be covered by the claims appended hereto.

Because all embodiments of the invention do not use mandrels, and because in some instances the specific configurations of the mandrel may vary, it is desirable to set forth the parameters of the prestressing of the expansible member or bladder in other terms. Thus, a

expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationshipwithin said valve member and adapted to open and close the communication between said fluid passageway and the interior of said expansible member; and means to impart longitudinal and radial stress to the walls of said expansible member prior to storing fluid therein, said expansible member being longitudinally elongated at least 100 percent over its normal length.

2. The dispenser in accordance with claim 1 wherein said expansible member is adaptable to have an elongate portion extend substantially the entire interior length of said container body and saidmeans to impart longitudinal and radial stress retains said expansible member in the extended position.

3. The dispenser in accordance with claim 2 wherein said valve member includes a valve body member having a valve seat and said valve seating member acts thereagainst to close said communication between said fluid passageway and the interior of said expansible member and said elongate portion thereof is of larger diameter than said means to impart longitudinal and radial stress.

4. The dispenser in accordance with claim 3 wherein said valve seating member. is normally spring biased into the closed position.

5. The dispenser in accordance with claim 4 wherein said means to impart longitudinal and radial stress comprises an elongate mandrel.

6. The dispenser in accordance with claim 5 wherein said mandrel has a plurality of spaced grooves extend ing substantially the length thereof and the upper portion is adapted to form fluid paths for the fluid stored in said expansible member to said fluid passageway.

7. The dispenser in accordance with claim 3 wherein said means to impart longitudinal and radial stress comprises an elongate mandrel having an upper end adapted to form fluid paths thereabout, .for the stored fluid, to said fluid passageway.

8. The dispenser in accordance with claim 3 wherein said means to impart longitudinal and radial stress comprises a retaining member within said expansible member and retained at the interior, bottom wall of said container body.

9. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body, said valve member comprising a valve body member having a valve seat and a valve seating member disposed in axially shiftable relationship within said valve member and which is normally spring biased into. the

closed position against said valve seat to close the communication between said fluid passageway and the interior of an expansible member hereinafter defined; an

expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end and having an elongate portion adapted to extend substantially the entire interior length of said container body and being larger in diameter than means hereinafter defined to impart longitudinal and radial stress to the walls of said expansible member, said expansible member being adapted to be retained within said container body and store fluid therein, said means to impart longitudinal and radial stress comprising an elongate mandrel retaining said expansible member in the extended position and having a plurality of spaced grooves extending substantially the length thereof and the upper portion thereof being adapted to form fluid paths for the fluid stored in said expansible member, to said fluid passageway.

10. The dispenser in accordance with claim 9 wherein said valve seating member comprises an annular head with spaced peripheral protuberances thereabout, and a depending spring centering portion which limits the downward movement thereof by abutting an upper surface of said mandrel.

11. the dispenser in accordance with claim 10 wherein said spring is coil-shaped and is positioned to react against the under surface of said annular head and the upper surface of said mandrel.

12. The dispenser in accordance with claim 11 wherein the upper surface of said head forms a sealing lip to engage the undersurface of said valve seat in fluid-tight relationship.

13. The dispenser in accordance with claim 12 wherein said valve seat andivalve body member are received in nestled relationship by a ferrule member of deformable character and said valve seat is a disc of conformable material having an annular passageway of the same size as said fluid passageway and communicating thereto.

14. The dispenser in accordance with claim 13 wherein said disc is retained in position with said valve body member by said overlying ferrule member and said ferrule member has an aligned aperture accommodating said fluid passageway and said annular passageway. i

15. The dispenser in accordance with claim 14 wherein the open end of said expansible member is retained in fluid-tight relationship in. the assembly and a snap-ring member adapted to engage the interior wall of said container body positions the assembly within the neck of said container body and the length of said elongate portion is about one-half to one-third the length of said mandrel, and additionally includes a fluid impermeable barrier.

16. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said expansible member and means to impart longitudinal and radial stress to the walls of said expansiblemember prior to storing fluid therein, said expansible member being adaptable to have an elongate portion extend substantially the entire interior length of said container body and said means to impart longitudinal and radial stress retains said expansible member in the extended position, said valve member including a valve body member having a valve seat and said valve seating member acts thereagainst to close said communication between said fluid passageway and the interior of said expansible member and said elongate portion'thereof is of larger diameter than said means toimpart longitudinal and radial stress, and said last named means comprises an elongate mandrel hav ing an upper end adapted to form fluid paths thereabout, for the stored fluid, to start fluid passageway.

17. The dispenser in accordance with claim 16 wherein the interior, bottom wall of said container body is adapted to receive the terminus of said mandrel opposite said upper end in friction fit engagement.

18. The dispenser in accordance with claim 17 wherein a collet configuration is provided on the interior and bottom of said container body and said terminus of said mandrel is bulbous shaped to be received by said collet in snap-fitting engagement.

19. The dispenser in accordance with claim 18 wherein the open end of said expansible member is re-' ceived by the lower portion of said valve body member and said valve seat and valve body member are received in nestled relationship by a ferrule member of deformable character to form an assembly and said valve seat is a disc of conformable material having an annular passageway of the same size as said fluid passageway and communicating thereto and the neck of said container body is adapted to support said assembly and expansible member in retained, fluid-tight relationship.

20. A fluid, dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said expansible member and means to impart longitudinal and radial stress to the walls of said expansible member prior to storing fluid therein, said expansible member being adaptable to have an elongate portion extend substantially the entire interior length of said container body and said means to impart longitudinal and radial stress retains said expansible member in the extended position, said valve member including a valve body member having a valve seat and said valve seating member acts thereagainst to close said communication between said fluid passageway and.

the interior of said expansible member and said elongate portion thereof is of larger diameter than said means to impart longitudinal and radial stress, and said last named means comprises a retaining member within said expansible member and retained at the interior, bottom wall of said container body.

21. The dispenser in accordance with claim 20 wherein said interior, bottom wall of said container body is adapted to receive said retaining member in friction-fit engagement.

22. The dispenser in accordance with claim 21 wherein said retaining member is spherical and the wall of said expansible member above said retaining member is twisted off to thereby form an upper fluid storage cavity and a lower retaining member cavity.

23. The dispenser in accordance with claim 22 wherein a collet configuration is provided on the interior and bottom of said container body, and said spherical retaining member and the wall of said expansible member forming said lower retaining member cavity are received by said collet in snap-fitting, frictional engagement.

24. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said expansible member; and means to impart longitudinal and radial stress to the walls of said expansible member prior to storing fluid therein, said expansible member being longitudinally elongated over its normal length by an amount in excess of the amount of permanent set of said expansible member to exert an gated about percent over its normal length. 

1. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said expansible member; and means to impart longitudinal and radial stress to the walls of said expansible member prior to storing fluid therein, said expansible member being longitudinally elongated at least 100 percent over its normal length.
 2. The dispenser in accordance with claim 1 wherein said expansible member is adaptable to have an elongate portion extend substantially the entire interior length of said container body and said means to impart longitudinal and radial stress retains said expansible member in the extended position.
 3. The dispenser in accordance with claim 2 wherein said valve member includes a valve body member having a valve seat and said valve seating member acts thereagainst to close said communication between said fluid passageway and the interior of said expansible member and said elongate portion thereof is of larger diameter than said means to impart longitudinal and radial stress.
 4. The dispenser in accordance with claim 3 wherein said valve seating member is normally spring biased into the closed position.
 5. The dispenser in accordance with claim 4 wherein said means to impart longitudinal and radial stress comprises an elongate mandrel.
 6. The dispenser in accordance with claim 5 wherein said mandrel has a plurality of spaced grooves extending substantially the length thereof and the upper portion is adapted to form fluid paths for the fluid stored in said expansible member to said fluid passageway.
 7. The dispenser in accordance with claim 3 wherein said means to impart longitudinal and radial stress comprises an elongate mandrel having an upper end adapted to form fluid paths thereabout, for the stored fluid, to said fluid passageway.
 8. The dispenser in accordance with claim 3 wherein said means to impart longitudinal and radial stress comprises a retaining member within said expansible member and retained at the interior, bottom wall of said container body.
 9. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body, said valve member comprising a valve body member having a valve seat and a valve seating member disposed in axially shiftable relationship within said valve member and which is normally spring biased into the closed position against said valve seat to close the communication between said fluid passageway and the interior of an expansIble member hereinafter defined; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end and having an elongate portion adapted to extend substantially the entire interior length of said container body and being larger in diameter than means hereinafter defined to impart longitudinal and radial stress to the walls of said expansible member, said expansible member being adapted to be retained within said container body and store fluid therein, said means to impart longitudinal and radial stress comprising an elongate mandrel retaining said expansible member in the extended position and having a plurality of spaced grooves extending substantially the length thereof and the upper portion thereof being adapted to form fluid paths for the fluid stored in said expansible member, to said fluid passageway.
 10. The dispenser in accordance with claim 9 wherein said valve seating member comprises an annular head with spaced peripheral protuberances thereabout, and a depending spring centering portion which limits the downward movement thereof by abutting an upper surface of said mandrel.
 11. the dispenser in accordance with claim 10 wherein said spring is coil-shaped and is positioned to react against the under surface of said annular head and the upper surface of said mandrel.
 12. The dispenser in accordance with claim 11 wherein the upper surface of said head forms a sealing lip to engage the undersurface of said valve seat in fluid-tight relationship.
 13. The dispenser in accordance with claim 12 wherein said valve seat and valve body member are received in nestled relationship by a ferrule member of deformable character and said valve seat is a disc of conformable material having an annular passageway of the same size as said fluid passageway and communicating thereto.
 14. The dispenser in accordance with claim 13 wherein said disc is retained in position with said valve body member by said overlying ferrule member and said ferrule member has an aligned aperture accommodating said fluid passageway and said annular passageway.
 15. The dispenser in accordance with claim 14 wherein the open end of said expansible member is retained in fluid-tight relationship in the assembly and a snap-ring member adapted to engage the interior wall of said container body positions the assembly within the neck of said container body and the length of said elongate portion is about one-half to one-third the length of said mandrel, and additionally includes a fluid impermeable barrier.
 16. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said expansible member and means to impart longitudinal and radial stress to the walls of said expansible member prior to storing fluid therein, said expansible member being adaptable to have an elongate portion extend substantially the entire interior length of said container body and said means to impart longitudinal and radial stress retains said expansible member in the extended position, said valve member including a valve body member having a valve seat and said valve seating member acts thereagainst to close said communication between said fluid passageway and the interior of said expansible member and said elongate portion thereof is of larger diameter than said means to impart longitudinal and radial stress, and said last named means comprises an elongate mandrel having aN upper end adapted to form fluid paths thereabout, for the stored fluid, to start fluid passageway.
 17. The dispenser in accordance with claim 16 wherein the interior, bottom wall of said container body is adapted to receive the terminus of said mandrel opposite said upper end in friction fit engagement.
 18. The dispenser in accordance with claim 17 wherein a collet configuration is provided on the interior and bottom of said container body and said terminus of said mandrel is bulbous shaped to be received by said collet in snap-fitting engagement.
 19. The dispenser in accordance with claim 18 wherein the open end of said expansible member is received by the lower portion of said valve body member and said valve seat and valve body member are received in nestled relationship by a ferrule member of deformable character to form an assembly and said valve seat is a disc of conformable material having an annular passageway of the same size as said fluid passageway and communicating thereto and the neck of said container body is adapted to support said assembly and expansible member in retained, fluid-tight relationship.
 20. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said expansible member and means to impart longitudinal and radial stress to the walls of said expansible member prior to storing fluid therein, said expansible member being adaptable to have an elongate portion extend substantially the entire interior length of said container body and said means to impart longitudinal and radial stress retains said expansible member in the extended position, said valve member including a valve body member having a valve seat and said valve seating member acts thereagainst to close said communication between said fluid passageway and the interior of said expansible member and said elongate portion thereof is of larger diameter than said means to impart longitudinal and radial stress, and said last named means comprises a retaining member within said expansible member and retained at the interior, bottom wall of said container body.
 21. The dispenser in accordance with claim 20 wherein said interior, bottom wall of said container body is adapted to receive said retaining member in friction-fit engagement.
 22. The dispenser in accordance with claim 21 wherein said retaining member is spherical and the wall of said expansible member above said retaining member is twisted off to thereby form an upper fluid storage cavity and a lower retaining member cavity.
 23. The dispenser in accordance with claim 22 wherein a collet configuration is provided on the interior and bottom of said container body, and said spherical retaining member and the wall of said expansible member forming said lower retaining member cavity are received by said collet in snap-fitting, frictional engagement.
 24. A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; an expansible member having an open end and a closed end, the diameter proximate said open end being larger than the diameter of said closed end, said expansible member being adapted to be retained within said container body and store fluid therein; a valve seating member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication betWeen said fluid passageway and the interior of said expansible member; and means to impart longitudinal and radial stress to the walls of said expansible member prior to storing fluid therein, said expansible member being longitudinally elongated over its normal length by an amount in excess of the amount of permanent set of said expansible member to exert an expelling force on residual fluid contained within said expansible member.
 25. A fluid dispenser in accordance with claim 24 wherein said expansible member is longitudinally elongated about 50-250 percent over its normal length.
 26. A fluid dispenser in accordance with claim 25 wherein said expansible member is longitudinally elongated about 80 percent over its normal length. 